Door lock



FIG. 1 is a front view of a door lock showing my new design in an unlocked position;

FIG. 2 is a rear view thereof;

FIG. 3 is a right end view thereof;

FIG. 4 is a left end view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front view showing my new design in a locked position;

FIG. 8 is a rear view thereof;

FIG. 9 is a right end view thereof;

FIG. 10 is a left end view thereof;

FIG. 11 is a top view thereof; and,

FIG. 12 is a bottom view thereof. 

The ornamental design for a door lock, as shown and described. 